rostel



3 Sheets-Sheet 2.

(No Model.)

6. ROSTEL. FRICTION BRAKE FOR GUN OARRIAGES.

No. 466,961. Patented Deo.29,1891.

FIG-3-1M.

3 SheetsShee-t 3.

mm W (No Model.)

0. RGSZEL. FRICTION BRAKE FOB. GUN GARRIAGES.

No. 466,261. Patented Dec. 29, 1891.

Jmrnn STATES PATENT Fries.

-ARl HOSTEL, OF MAGDEBURG-BUCKA U, GERMANY, ASSIGNOR TO THE GRUSONVERK, OF SAME PLACE.

FRiCTlQN-BRAKE FOR GUN -CARRIAGES.

SPECIFICATION formingpart of Letters Patent No. 466,261, dated December 29, 1891. Application filed December 23, 1890. Serial No. 375,596. (No model.)

To all whom it may concern.-

Be it known that I, CARL RosrnL', a subject of the Emperor of Germany, residing at Magdeburg-Buckau, Kingdom of Prussia. and Empire of Germany, have invented a certain new and useful Friction-Brake for Gun-Carriages, of which the following is a'specification.

This invention relates to friction-brakes for gun-carriages, and has for its object toincrease the efiect of such brakes and to facilirate the operation of the same. 7

In the accompanying d awings, Figure I is a rear view of a gun-carriage with the trail removed and showing one wheel in section with my improvements applied thereto. Fig. II isa section on the line 11 II of Fig. I. Fig. III represents in side and end elevation the operating-shaft. Fig. 1V is an enlarged sectional view or elevation of the invention, showing more fully the internal arrangement of the parts; and Fig. V is a cross-sectional View of the same on the line a; a, parts being broken away. I

A A designate the brackets or cheeks of the gun-carriage, B the axle, and G the nave of the wheel. Upon each journal of the axle is secured a disk 6, carrying the pins 6 and Z), upon which the bent levers c and c are supported. iVhen these levers are turned outward upon the pins, they force a brakespring a with such power against a ring d, loosely held upon the same that the two parts will be firmly coupled with each other. The ring d carries on its outer peripherytwo tappets' d and d, and is surrounded by a ring C, cast on the nave of the wheel and pr0 vided on its inner periphery with two tappets e and e". Between the aforesaid ring 0' and the ring d areinserted two pieces f and f of elastic material. Now when on applying the brake the spriuga is coupled with the ring d by the turning of the bent lovers 0' and c, the tappet e in the movement of the wheel forces the piece f against the tappet cl", while the tappet e forces the piece f against the tappetd. Accordingly the pieces fandf' of elastic material are compressed, thereby obtaining a period of transition from the movement to the stoppage, such as is necessary for the brake of a wheel.

- 0 is turned, the head of is supported upon the axle of the wheel and has flattened heads extending between the upper ends of the said levers.

the same in the ring of each nave forces the bent levers c and c asunder, and causes them to turn upon the pins b and I)". Now as the'turning of the rod e can be effected by a long lever-arm while a very short agm (half the breadth of the Vhen the rod flattened head) acts upon the resistance, and

as, moreover, the bent levers are applied with a very great leverage to the brake-spring a, it is evident that the brake will require only a small expenditure of power and yet be applied with extremely great force. I

This improved apparatus presents the advantage that it can be readily converted into a brake, which operates automatically in the firing of a gun by utilizing the recoil of the latter for turning the rod e.

The brake is completely protected from dirt by the disk I), fitting accurately against the ring 0' of the nave.

It may be observed that the ring (Z and the elastic material are not absolutely necessary, as the spring a may also be adapted to press directly against the ring 0 of the nave. In this case there will be no period of transition from the motion to' the stoppage, the latter taking place suddenly.v I

I claiu1- 1. In a friction-brake, the combination of the wheel, the brake-spring adapted to oppose the rotation of the wheel, the lovers engaging said brake-spring for spreading it, and the operating-rod engaging said levers, all sub stantially as and for the purpose set forth.

2. In afriction-brake, the combination, with the wheel and a suitable brake for the hub of said wheel, of a transmitting medium between the brake and hub comprising rings on the respective parts provided with tappets and elastic material between said tappets, substantially as and for the purpose set forth.'

' 3. In a friction-brake for gun-carriages, the combination of the wheel-hub, the brakespring adanted to oppose the rotation of the hub, the spi'eadinglevei's having engagement near their fuleiums with the ends of the brake-spring, and the operating-shaft engaging said spreading-levers, substantially as 5 and for the purpose set forth,

4. In a frietiombrake, the combination of the axle, i act upon'said levers substantially asand fmf p:

the hub and axle, the piveteci levers and their means of support upon the axle, the brakespring having the ends engaging the levers near their fulerums, and'the operating-shaft adapted to farce the levers asunder, substandaily as and 101' the purpose set forth 5. In a frietiewbmke for gumeai'riages, the

combination of. the axle and hub, the ring, I 0 :5

the tappets on said ring and hub, the elai material interposed between the tappets, the brake-spring adapted to act upon said ring, the levers and their means of support 11 on and the operating-shaft adapte t0:

the purpose set forth. I

'O. ROS'IEL.

Witnesses? JULIUS VON SCHUTZ, EMIL KALLNUK-ER. 

